Share Based Compensation (Tables)

12 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Fair value assumptions for stock options on the date of grant

We estimated the fair value of each stock option on the date of grant using the Black-Scholes pricing model and the following assumptions:

	2013		2012		2011
Average risk-free interest rate	0.66	%	1.06	%	1.94	%
Expected dividend yield	2.35	%	2.29	%	2.37	%
Expected volatility	0.43		0.43		0.39
Expected term (years)	5.3		5.3		5.5

Summary of stock option activity

A summary of stock option activity for the year ended September 30, 2013 is:

	Shares (in thousands)		Wtd. Avg. Exercise Price		Wtd. Avg. Remaining Contractual Term (years)	Aggregate Intrinsic Value of In-The-Money Options (in millions)
Outstanding at October 1, 2012	7,873		$	56.75
Granted	1,087		80.34
Exercised	(3,379	)	51.22
Forfeited	(91	)	74.07
Cancelled	(2	)	65.13
Outstanding at September 30, 2013	5,488		64.53		6.9	$	232.7
Vested or expected to vest at September 30, 2013	5,311		64.15		6.8	227.3
Exercisable at September 30, 2013	3,048		55.40		5.6	157.1

Summary of performance share activity

A summary of performance share activity for the year ended September 30, 2013 is as follows:

	Performance Shares (in thousands)		Wtd. Avg. Grant Date Share Fair Value
Outstanding at October 1, 2012	297		$	76.84
Granted1	79		98.15
Adjustmentfor performance results achieved2	98		54.81
Vested and issued	(232	)	54.81
Forfeited	(9	)	96.82
Outstanding at September 30, 2013	233		96.02

Schedule of performance shares vested during the year [Table Text Block]

The following table summarizes information about performance shares vested during the years ended September 30:

	2013			2012			2011
Percent payout	173		%	200		%	42		%
Shares vested (in thousands)	232			345			44
Total fair value of shares vested (in millions)	$	18.7		$	25.8		$	3.0

Fair value assumptions for performance share awards on the date of grant

The per share fair value of performance share awards granted during the years ended September 30, 2013, 2012 and 2011 was $98.15, $101.57 and $87.00, respectively, which we determined using a Monte Carlo simulation and the following assumptions:

	2013		2012		2011
Average risk-free interest rate	0.32	%	0.39	%	0.63	%
Expected dividend yield	2.32	%	2.29	%	2.01	%
Expected volatility	0.36		0.43		0.49

Summary of restricted stock and restricted stock unit activity

A summary of restricted stock and restricted stock unit activity for the year ended September 30, 2013 is as follows:

	Restricted Stock and Restricted Stock Units (in thousands)		Wtd. Avg. Grant Date Share Fair Value
Outstanding at October 1, 2012	269		$	59.57
Granted	65		80.17
Vested	(124	)	44.71
Forfeited	(11	)	76.13
Outstanding at September 30, 2013	199		74.63